import java.util.Date;
import java.util.Calendar;
import java.text.SimpleDateFormat;
import java.text.ParseException;
import java.awt.Color;
import java.awt.Font;
import java.awt.Point;
import java.awt.Dimension;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Cursor;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.SwingUtilities;
import javax.swing.SwingConstants;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import javax.swing.border.LineBorder;

public class DateSelector extends JButton {
    private DateChooser dateChooser = null;


    public DateChooser getDateChooser() {
        return dateChooser;
    }

    public void setDateChooser(DateChooser dateChooser) {
        this.dateChooser = dateChooser;
    }
    public DateChooser getInstance() {
        if (this.dateChooser == null)
            this.dateChooser = new DateChooser();
        return dateChooser;
    }

    private String preLabel = "";

    public DateSelector() {
        this(getNowDate());

    }

    public DateSelector(SimpleDateFormat df, String dateString) {
        this();

        setText(df, dateString);

    }

    public DateSelector(Date date) {
        this("", date);

    }

    public DateSelector(String preLabel, Date date) {
        if (preLabel != null)

            this.preLabel = preLabel;

        setDate(date);

        setBorder(null);

        setCursor(new Cursor(Cursor.HAND_CURSOR));

       /* super.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if (dateChooser == null)

                    dateChooser = new DateChooser();

                Point p = getLocationOnScreen();

                p.y = p.y + 30;

                dateChooser.showDateChooser(p);

            }

        });*/

    }

    private static Date getNowDate() {
        return Calendar.getInstance().getTime();

    }

    private static SimpleDateFormat getDefaultDateFormat() {
        return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    }

    public void setText(String s) {
        Date date;

        try {
            date = getDefaultDateFormat().parse(s);

        } catch (ParseException e) {
            date = getNowDate();

        }

        setDate(date);

    }

    public void setText(SimpleDateFormat df, String s) {
        Date date;

        try {
            date = df.parse(s);

        } catch (ParseException e) {
            date = getNowDate();

        }

        setDate(date);

    }

    public void setDate(Date date) {
        super.setText(preLabel + getDefaultDateFormat().format(date));

    }

    public Date getDate() {
        String dateString = getText().substring(preLabel.length());

        try {
            return getDefaultDateFormat().parse(dateString);

        } catch (ParseException e) {
            return getNowDate();

        }

    }



    public class DateChooser extends JPanel implements ActionListener,

            ChangeListener {
        int startYear = 1980; // 默认【最小】显示年份

        int lastYear = 2050; // 默认【最大】显示年份

        int width = 200; // 界面宽度

        int height = 200; // 界面高度

        Color backGroundColor = Color.gray; // 底色

// 月历表格配色----------------//

        Color palletTableColor = Color.white; // 日历表底色

        Color todayBackColor = Color.orange; // 今天背景色

        Color weekFontColor = Color.blue; // 星期文字色

        Color dateFontColor = Color.black; // 日期文字色

        Color weekendFontColor = Color.red; // 周末文字色

// 控制条配色------------------//

        Color controlLineColor = Color.blue; // 控制条底色

        Color controlTextColor = Color.white; // 控制条标签文字色

        Color rbFontColor = Color.white; // RoundBox文字色

        Color rbBorderColor = Color.red; // RoundBox边框色

        Color rbButtonColor = Color.pink; // RoundBox按钮色

        Color rbBtFontColor = Color.red; // RoundBox按钮文字色

        JDialog dialog;

        JSpinner yearSpin;

        JSpinner monthSpin;

        JSpinner hourSpin;

        JSpinner minuteSpin;

        JSpinner secondSpin;

        JButton[][] daysButton = new JButton[6][7];

        DateChooser() {
            setLayout(new BorderLayout());

            setBorder(new LineBorder(backGroundColor, 2));

            setBackground(backGroundColor);

            /*上中下布局*/

            JPanel topYearAndMonth = createYearAndMonthPanal();

            add(topYearAndMonth, BorderLayout.NORTH);

            JPanel centerWeekAndDay = createWeekAndDayPanal();

            add(centerWeekAndDay, BorderLayout.CENTER);

            JPanel southMinAndSec = createMinuteAndsecondPanal();

            add(southMinAndSec, BorderLayout.SOUTH);

        }

        private JPanel createYearAndMonthPanal() {
            Calendar c = getCalendar();

            int currentYear = c.get(Calendar.YEAR);//年

            int currentMonth = c.get(Calendar.MONTH) + 1;//月

            JPanel result = new JPanel();

            result.setLayout(new FlowLayout());

            result.setBackground(controlLineColor);

            yearSpin = new JSpinner(new SpinnerNumberModel(currentYear,

                    startYear, lastYear, 1));

            yearSpin.setPreferredSize(new Dimension(48, 20));

            yearSpin.setName("Year");

            yearSpin.setEditor(new JSpinner.NumberEditor(yearSpin, "####"));

            yearSpin.addChangeListener(this);

            result.add(yearSpin);

            JLabel yearLabel = new JLabel("年");

            yearLabel.setForeground(controlTextColor);

            result.add(yearLabel);

            monthSpin = new JSpinner(new SpinnerNumberModel(currentMonth, 1,

                    12, 1));

            monthSpin.setPreferredSize(new Dimension(35, 20));

            monthSpin.setName("Month");

            monthSpin.addChangeListener(this);

            result.add(monthSpin);

            JLabel monthLabel = new JLabel("月");

            monthLabel.setForeground(controlTextColor);

            result.add(monthLabel);

            return result;

        }

        private JPanel createWeekAndDayPanal() {
            String colname[] = {"日", "一", "二", "三", "四", "五", "六"};

            JPanel result = new JPanel();

// 设置固定字体，以免调用环境改变影响界面美观

            result.setFont(new Font("宋体", Font.PLAIN, 12));

            result.setLayout(new GridLayout(7, 7));

            result.setBackground(Color.white);

            JLabel cell;

            for (int i = 0; i < 7; i++) {
                cell = new JLabel(colname[i]);

                cell.setHorizontalAlignment(JLabel.RIGHT);

                if (i == 0 || i == 6)

                    cell.setForeground(weekendFontColor);

                else

                    cell.setForeground(weekFontColor);

                result.add(cell);

            }

            int actionCommandId = 0;

            for (int i = 0; i < 6; i++)

                for (int j = 0; j < 7; j++) {
                    JButton numberButton = new JButton();

                    numberButton.setBorder(null);

                    numberButton.setHorizontalAlignment(SwingConstants.RIGHT);

                    numberButton.setActionCommand(String

                            .valueOf(actionCommandId));

                    numberButton.addActionListener(this);

                    numberButton.setBackground(palletTableColor);

                    numberButton.setForeground(dateFontColor);

                    if (j == 0 || j == 6)

                        numberButton.setForeground(weekendFontColor);

                    else

                        numberButton.setForeground(dateFontColor);

                    daysButton[i][j] = numberButton;

                    result.add(numberButton);

                    actionCommandId++;

                }

            return result;

        }

        private JPanel createMinuteAndsecondPanal() {
            Calendar c = getCalendar();

            int currentHour = c.get(Calendar.HOUR_OF_DAY);//时

            int currentMin = c.get(Calendar.MINUTE);//分

            int currentSec = c.get(Calendar.SECOND);//秒

            JPanel result = new JPanel();

            result.setLayout(new FlowLayout());

            result.setBackground(controlLineColor);

            hourSpin = new JSpinner(new SpinnerNumberModel(currentHour, 0, 23, 1));

            hourSpin.setPreferredSize(new Dimension(35, 20));

            hourSpin.setName("Hour");

            hourSpin.addChangeListener(this);

            result.add(hourSpin);

            JLabel hourLabel = new JLabel("时");

            hourLabel.setForeground(controlTextColor);

            result.add(hourLabel);

            minuteSpin = new JSpinner(new SpinnerNumberModel(currentMin, 0, 59, 1));

            minuteSpin.setPreferredSize(new Dimension(35, 20));

            minuteSpin.setName("Minute");

            minuteSpin.addChangeListener(this);

            result.add(minuteSpin);

            JLabel minuteLabel = new JLabel("分");

            minuteLabel.setForeground(controlTextColor);

            result.add(minuteLabel);

            secondSpin = new JSpinner(new SpinnerNumberModel(currentSec, 0, 59, 1));

            secondSpin.setPreferredSize(new Dimension(35, 20));

            secondSpin.setName("Second");

            secondSpin.addChangeListener(this);

            result.add(secondSpin);

            JLabel secondLabel = new JLabel("秒");

            secondLabel.setForeground(controlTextColor);

            result.add(secondLabel);

            return result;

        }

        private JDialog createDialog(Frame owner) {
            JDialog result = new JDialog(owner, "日期时间选择", true);

            result.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);

            result.getContentPane().add(this, BorderLayout.CENTER);

            result.pack();

            result.setSize(width, height);

            return result;

        }

        void showDateChooser(Point position) {
            Frame owner = (Frame) SwingUtilities

                    .getWindowAncestor(DateSelector.this);

            if (dialog == null || dialog.getOwner() != owner)

                dialog = createDialog(owner);

            dialog.setLocation(getAppropriateLocation(owner, position));

            flushWeekAndDay();

            dialog.show();

        }

        Point getAppropriateLocation(Frame owner, Point position) {
            Point result = new Point(position);

            Point p = owner.getLocation();

            int offsetX = (position.x + width) - (p.x + owner.getWidth());

            int offsetY = (position.y + height) - (p.y + owner.getHeight());

            if (offsetX > 0) {
                result.x -= offsetX;

            }

            if (offsetY > 0) {
                result.y -= offsetY;

            }

            return result;

        }

        private Calendar getCalendar() {
            Calendar result = Calendar.getInstance();

            result.setTime(getDate());

            return result;

        }

        private int getSelectedYear() {
            return ((Integer) yearSpin.getValue()).intValue();

        }

        private int getSelectedMonth() {
            return ((Integer) monthSpin.getValue()).intValue();

        }

        private int getSelectedHour() {
            return ((Integer) hourSpin.getValue()).intValue();

        }

        private int getSelectedMinute() {
            return ((Integer) minuteSpin.getValue()).intValue();

        }

        private int getSelectedSecond() {
            return ((Integer) secondSpin.getValue()).intValue();

        }

        private void dayColorUpdate(boolean isOldDay) {
            Calendar c = getCalendar();

            int day = c.get(Calendar.DAY_OF_MONTH);

            c.set(Calendar.DAY_OF_MONTH, 1);

            int actionCommandId = day - 2 + c.get(Calendar.DAY_OF_WEEK);

            int i = actionCommandId / 7;

            int j = actionCommandId % 7;

            if (isOldDay)

                daysButton[i][j].setForeground(dateFontColor);

            else

                daysButton[i][j].setForeground(todayBackColor);

        }

        private void flushWeekAndDay() {
            Calendar c = getCalendar();

            c.set(Calendar.DAY_OF_MONTH, 1);

            int maxDayNo = c.getActualMaximum(Calendar.DAY_OF_MONTH);

            int dayNo = 2 - c.get(Calendar.DAY_OF_WEEK);

            for (int i = 0; i < 6; i++) {
                for (int j = 0; j < 7; j++) {
                    String s = "";

                    if (dayNo >= 1 && dayNo <= maxDayNo)

                        s = String.valueOf(dayNo);

                    daysButton[i][j].setText(s);

                    dayNo++;

                }

            }

            dayColorUpdate(false);

        }

        public void stateChanged(ChangeEvent e) {
            JSpinner source = (JSpinner) e.getSource();

            Calendar c = getCalendar();

            if (source.getName().equals("Hour")) {
                c.set(Calendar.HOUR_OF_DAY, getSelectedHour());

                setDate(c.getTime());

                return;

            } else if (source.getName().equals("Minute")) {
                c.set(Calendar.MINUTE, getSelectedMinute());

                setDate(c.getTime());

                return;

            } else if (source.getName().equals("Second")) {
                c.set(Calendar.SECOND, getSelectedSecond());

                setDate(c.getTime());

                return;

            }

            dayColorUpdate(true);

            if (source.getName().equals("Year"))

                c.set(Calendar.YEAR, getSelectedYear());

            else

// (source.getName().equals("Month"))

                c.set(Calendar.MONTH, getSelectedMonth() - 1);

            setDate(c.getTime());

            flushWeekAndDay();

        }

        public void actionPerformed(ActionEvent e) {
            JButton source = (JButton) e.getSource();

            if (source.getText().length() == 0) return;

            dayColorUpdate(true);

            source.setForeground(todayBackColor);

            int newDay = Integer.parseInt(source.getText());

            Calendar c = getCalendar();

            c.set(Calendar.DAY_OF_MONTH, newDay);

            setDate(c.getTime());
            dialog.dispose();
        }

    }

}